Furnace



Jan. 18,1927.

A. B. KIDDER FURNACE F 'iled July 17, 1923 Patented Jan. 18, 1927.

UNITED STATES PATENT oFFicE.

ARTHUR B. KIDDER, OF CANTON, OHIO, ASSIGNOR TO THE KIDDER FURNACE COM- PANY, OF CANTON, OHIO.

FURNACE.

Application filed July 17, 1923.

nis invention relates to gas heated furnaces, and has for its objects to provide a furnace of this character in which air under pressure is forced into the heating chamher around each burner, the burners being projected into the heating chamber at opposite corners of the same to produce a bypass or swirling motion of the flame entirely around the heating chamber; to provide a blower for the furnace comprising a casing housing a single fan and provided with two outlets, one for connection with each burner; and to provide a novel assembly of the blower and frame construction of the furnace.

The above and other objects may be attained by constructing the furnace in the manner illustrated in the accompanying drawing, in which Figure 1 is a front elevation of a furnace embodying the invention;

Fig. 2, a plan section on the line 2-.2, Fig. 1;

Fig. 3, a section on the line 3-3, Fig. 2;

Fig. 4, a section on the line 474: Fig. 1,- and Fig. 5, a bottom plan View of the blower casing.

Similar numerals refer to similar parts throughout the drawing.

The heating chamber 1 of the furnace comprises the cast iron casing 2 having a fire brick lining 3 and provided with a door a through which the furnace is charged.

The heating chamber is supported upon a pair of frames, each comprising the leg members 5 and horizontal cross bar 6 connecting the legs in pairs near the fan casing 7 which may be bolted or otherwise attached to the floor, inturned lugs 8 being provided at the upper ends of the legs for attaching the heating chamber thereto.

For the purpose of admitting air under pressure to the heating chamber, a fanblou or is provided comprising the fan casing 7 provided with the rotary fan 9 which may be driven as by the motor 10 mounted upon the fan casing. An inlet opening 11 is provided in the bottom of the fan casing and oppo- Serial No. 652,094.

sitely disposed outlets 12 are provided at each side of the same.

The fan casing is provided upon diametrically opposite sides with the ears 13 which rest upon similar ears 14 formed upon the cross bars 6, bolts 15 being provided for connecting the ears together. The fan casing and motor are thus held in place beneath the heating chamber and the two side frames are anchored together, bracing the structure.

An air pipe 16 is connected to each outlet of the fan casing, said pipes leading to opposite corners of the heating chamber as best shown in Fig. 4, in order to cause a swirling motion of the air Within the heating chamber.

A gas supply pipe 17 is connected with the pipes 18 which lead to opposite sides of the heating chamber, each of said pipes being provided with a burner 19 projected through the screw plug 20 in the outer end of the adjacent air pipe 16 and extending through said air pipe, terminating in a conical end at a point spaced from the inner end of the same as best shown in Fig. i.

A valve 21 is provided in each gas pipe to individually control the gas to each burner and a damper 22 may be provided in each air pipe for individually controlling the air pressure. A weight 28 may be provided for normally holding the door in closed or opened position as desired.

I claim 1. A furnace of the character described including a rectangular heating chamber, a pair of upright frames supporting the heating chamber, a horizontal cross bar upon each frame, an inwardly disposed lug upon each cross bar, a fan casing provided with ears connected to said lugs, an outlet pipe connecting each side of the fan casing with the adjacent side of the heating chamber, said pipes entering the heating chamber at diagonally opposite corners, and a gas burner extended into each pipe and terminating in a conical end spaced from the interior of the heating chamber.

2. A furnace of the character described including a heating chamber, a pair of up right frames supporting the heating chamber, horizontal cross bar upon each frame, an inwardly disposed lug upon each cross bar, a fan casing provided With ears connected to said lugs, an outlet pipe connecting each side of the fan casing with the adjacent side of the heating chamber, said pipes entering the heating chamber at diagonally opposite points, and a gas burner extended into each pipe and terminating in a conical end spaced from the interior of the heating chamber.

In testimony that I claim the above, I have hereunto subscribed my name.

ARTHUR B. KIDDER. 

